body {
    margin: 0;
    padding: 0;
}

.label{
    color: white;
    /*background-color: rgba(0, 0, 0, 0.5);*/
    text-shadow: 1px 1px 3px black;
}
#graph {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: url("../img/背景.png");
    background-size: 100% 100%;
}